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Title

CONJUGATE MIXED CONVECTION WITH SURFACE RADIATION IN AN INCLINED CHANNEL WITH PROTRUDING HEAT SOURCES

Pages

 Start Page 43 | End Page 55

Abstract

 Numerical solution for mixed convection combined with surface RADIATION in an INCLINEd channel containing three protruding heat sourcesis investigated in this article. This combinationre present printed circuit boards in electrical equipments. Air is assumed to be the working fluid which is laminar, steady, incompressible and thermally and hydrodynamicaly developing. Governing equations are discretized using the F. V. method in a staggered domain and simple algorithm is used to couple velocity and a pressure. Numerical results presented for temperature and velocity contribution and maximum temperature that occur in chips for different valuesof fan velocity as Reynolds number 150< Re< 1400 and heat generated in chips as Grashof number 1< Gr < 1.2x107 and channel installation angel 0 <f< 90. Main emphasis in this article is comparison between vertical and horizontal design of electrical equipments. According to results in natural convection regime maximum temperature decreases as channel angel increase from 0 to 90 but in forced convection regime, maximum temperature increases 30 centigrade.

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